1main().txt

一个不错的不错的学生成绩管理系统

#include<stdio.h>
#define PAUSE printf("\n 按任意键继续...");getch();
#define len sizeof(struct student)
#define null 0

struct student
{double num;
 char name[10];
 int class;
 float score[5];
 struct student *next;
};
struct student *head=null;
struct student *p1,*p2;
int n=0; /*n为结点个数*/
char *subject[]={"英语","高等数学","C语言","物理","法律"}; /*定义成绩科目*/

main()  /*主函数*/
{float temp;
char menu;
menu='1';
while(menu!='0')
{clrscr();
 printf("\n\n\n\n\n\n");
 printf("                       学生成绩管理系统\n");
 printf("              *******^_^******************^_^*******\n");
 printf("                  1.创建新的成绩记录.\n");
 printf("                  2.查询已有的记录.\n");
 printf("                  3.修改成绩记录.\n");
 printf("                  4.导入已存在的记录.\n");
 printf("                  5.统计所有记录.\n");
 printf("                  6.列出所有记录.\n");
 printf("                  0.退出.\n");
 printf("              *******^_^******************^_^*******\n");
 printf("                           请选择按键(0-6)操作:");
 scanf(" %c",&menu);
  switch(menu)
  {case '1':input();break;
   case '2':search();break;
   case '3':modify();break;
   case '4':load();break;
   case '5':gather();break;
   case '6':show_all();break;
   case '0':menu='0';break;
   default:printf("\n 输入超出范围，请键入0-6.\n\n");
           PAUSE;
  }
 }
}